Is my MS Office 2010 32bit or 64bit

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Besides default 32bit version, Microsoft Office 2010 software also come in 64bit version. Majority of users have MS Office 2010 of 32bit version, as default setup installs 32bit version even on 64bit compute systems. This is done for backward compatibility with old files and scripts. However, few users may have 64bit version of MS Office 2010 software – as it allows you to process large file sizes of MS Office files and documents. So, how can we check if MS Office 2010 software installed on my Windows 7 computer is 32bit or 64bit version?